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    copied!<p>You can use weightsum = 3 for linearlayout, and layout_weight = 1 for each button. See the detail code. I hope this will help. Good luck :)</p> <pre><code>public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); LinearLayout layout = new LinearLayout(this); layout.setOrientation(LinearLayout.HORIZONTAL); LinearLayout.LayoutParams params = new LinearLayout.LayoutParams( LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT); layout.setLayoutParams(params); layout.setWeightSum(3); for (int i = 0; i &lt; 3; i++) { LinearLayout.LayoutParams btnParams = new LinearLayout.LayoutParams( LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); btnParams.weight = 1.0f; Button btn = new Button(this); btn.setText("Btn"); btn.setLayoutParams(btnParams); layout.addView(btn); } setContentView(layout); } } </code></pre> <p>Or this code for better but more complicated ^^</p> <pre><code>public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); LinearLayout mainLayout = new LinearLayout(this); mainLayout.setOrientation(LinearLayout.HORIZONTAL); LinearLayout.LayoutParams params = new LinearLayout.LayoutParams( LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT); mainLayout.setLayoutParams(params); mainLayout.setWeightSum(3); for (int i = 0; i &lt; 3; i++) { LinearLayout.LayoutParams btnParams = new LinearLayout.LayoutParams( LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); Button btn = new Button(this); btn.setText("Btn"); btn.setLayoutParams(btnParams); LinearLayout childLayout = new LinearLayout(this); LinearLayout.LayoutParams childParam = new LinearLayout.LayoutParams( LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); childParam.weight = 1.0f; childLayout.setLayoutParams(childParam); childLayout.setGravity(Gravity.CENTER); childLayout.addView(btn); mainLayout.addView(childLayout); } setContentView(mainLayout); } } </code></pre>
 

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